thought, n. 1. conception, concept, idea, conceit; imagination, notion, whim, whimsy, vagary, crotchet, fancy.
2. cerebration, cerebrating, thinking, brainwork, headwork, lucubration; concentration, concentrating, focusing, having one's mind on, reflection, reflecting; cogitation, cogitating, meditation, meditating, contemplation, contemplating, musing, pondering; speculation, speculating, wondering about, consideration, deliberation, deliberating, excogitation; rumination, ruminating, chewing, mulling, brooding, brown study; recollection, recall, memory, remembrancy, reminiscence, retrospection, review.
3. intelligence, sense, Gk. Philos, nous, reason, understanding, imagination; intellect, aptitude, mind, brains, brainpower, Inf gray matter, SI. smarts.
4. intention, aim, destination, purpose, project; design, plan, plot, scheme.
5. expectation, expectancy, prospect, potential, probability; anticipation, hope, aspiration, dream, vision.
6. consideration, thoughtfulness, carefulness; kindness, kindliness, kindheartedness, compassion, compassionateness, tenderness, sympathy; benevolence, good will, beneficence, charitableness; attention, attentiveness, mindfulness, heedfulness; care, concern, solicitude, solicitousness; regard, respect, deference, esteem, homage, honor, reverence, veneration.
7. judgement, conclusion, estimation, appraisal, assessment, calculation; theory, hypothesis, supposition, assumption, surmise, conjecture, guess; opinion, view, apprehension, position, stand, posture; attitude, sentiment, feeling, belief, tenet, conviction.
8. touch, tinge, trace, soupgon, suspicion, hint, suggestion; bit, speck, taste, dash, pinch, sprinkle, sprinkling; thimbleful, trifle, little.
thoughtful, adj. 1. pensive, musing, pondering, Archaic, museful; cerebrational, thinking, absorbed, immersed, engrossed, lost in thought, bemused, rapt in thought; intent, concentrating, focusing, ruminative, ruminant, ruminating, chewing, chewing one's cud, brooding, mulling over.
2. profound, deep, serious, grave, momentous; pithy, meaty, substantial, considerable, weighty, heavy.
3. careful, cautious, circumspect, circumspective; canny, prudent, discreet; chary, wary, guarded, watchful, vigilant; attentive, mindful, heedful, concerned, solicitous.
4. considerate, kind, kindly, kindhearted, compassionate, tender, sympathetic; benevolent, beneficent, charitable; respectful, regardful, deferential, reverent.
thoughtless, adj. 1. careless, heedless, unheeding, unmindful, regardless, disregardful, negligent, neglectful, remiss; inadvertent, inattentive, unobservent, un-observing; inconsiderate, insensible, incogitant, unthinking, forgetful, oblivious; tactless, untactful, undiplomatic, unsolicitous.
2. reckless, rash, precipitate, headlong, foolhardy; unreasoning, unreflecting, unreflective; ill-advised, ill-considered, unwise, imprudent, injudicious, impolitic, indiscreet, improvident.
3. scatterbrained, harebrained, lamebrained, flighty, giddy, dizzy, Inf. gaga; vacuous, empty, blank, vacant, empty-headed, with rooms to let.